Journal ArticleDOI
Pectic zymograms and taxonomy and pathogenicity of the Ceratobasidiaceae
TLDR
The pectic enzymes of 140 isolates of Rhizoctonia-1ike fungi from the Western Australian grainbelt were examined by electrophoresis and found to fall into 11 distinct zymogram groups (ZG).Abstract:
The pectic enzymes of 140 isolates of Rhizoctonia-1ike fungi from the Western Australian grainbelt were examined by electrophoresis and found to fall into 11 distinct zymogram groups (ZG). Isolates within a ZG had a similar cultural and morphological appearance and were either all multinucleate or all binucleate. Some isolates from most ZGs sporulated when transferred from potato-dextrose-marmite agar to water agar. Isolates from within a ZG had the same teleomorph. Pathogenicity of the isolates was tested against wheat and lupins. All isolates from within a ZG were consistent in the type of lesions they produced and in their virulence towards these hosts. Rhizoctonia patch disease of cereals and lupins appears to be caused by isolates from ZG 1 and ZG 2. Severe reddish-brown and brown hypocotyl rots of lupins were caused by ZG 3 and ZG 4 isolates respectively. Five Ceratobasidium groups (CZG), one Waitea group (WZG) and ZG 5 had weak to nil pathogenicity towards wheat and lupins.read more
Citations
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Production of pectic enzymes by barepatch isolates of Rhizoctonia solani AG 8
TL;DR: The results suggest that there are additional factors that contribute to the virulence of these isolates that are not currently known.
Journal ArticleDOI
Infraspecific variation demonstrated in Phomopsis leptostromiformis using cultural and biochemical techniques
TL;DR: One isolate of P. leptostromiformis was from petioles of Trifolium subterraneum and this is the first record of the fungus on a host other than Lupinus .
Journal Article
Effects of Meloidogyne spp. and Rhizoctonia solani on the Growth of Grapevine Rootings.
TL;DR: It was concluded that both the M. incognita population and some R. solani isolates were virulent against both Colombard and Ramsey, and that measures to prevent spread in nursery stock were therefore important.
Journal ArticleDOI
The occurrence and pathogenicity of Rhizoctonia fungi in South Australian plant nurseries
TL;DR: Although multinucleate Rhizoctonia fungi can cause severe disease of bedding plants, it is difficult to predict such damage due to the influence of potting mix edaphic factors and variability in pathogenicity of the isolates present.
Journal ArticleDOI
Characteristics of some Rhizoctonia spp. from South Australian plant nurseries
TL;DR: Extracellular pectic enzyme patterns were not useful in determining likely anastomosis groups for the binucleate Rhizoctonia.
References
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Journal ArticleDOI
The genetics and pathology of rhizoctonia solani
TL;DR: The objective of this paper is to review the genetical and pathological research on Rhizoctonia solani Kuhn from 1965 to the present and to discuss each anastomosis group separately.
Journal ArticleDOI
A selective medium for the quantitative determination of Rhizoctonia solani in soil.
W. h. Ko,Frances K. Hora +1 more
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Safranin O as a rapid nuclear stain for fungi.
TL;DR: Maximum germination of both basidiospores and oidia was obtained on agar media containing cornmeal and malt extract with malt-extract-liquid medium, apparently providing a stimulatory substance in sufficient quantity to yield maximum percent germination.